SDL_ThreadPriority.3type - Man Page

#include <SDL3/SDL_thread.h>

typedef enum SDL_ThreadPriority {
    SDL_THREAD_PRIORITY_LOW,
    SDL_THREAD_PRIORITY_NORMAL,
    SDL_THREAD_PRIORITY_HIGH,
    SDL_THREAD_PRIORITY_TIME_CRITICAL
} SDL_ThreadPriority;

SDL will make system changes as necessary in order to apply the thread priority. Code which attempts to control thread state related to priority should be aware that calling SDL_SetCurrentThreadPriority may alter such state. SDL_HINT_THREAD_PRIORITY_POLICY can be used to control aspects of this behavior.

This enum is available since SDL 3.2.0.